Results 71 to 80 of about 181,166 (278)

Grammage of cosmic rays around Galactic supernova remnants [PDF]

, 2015
The residence time of cosmic rays (CRs) in the Galaxy is usually inferred from the measurement of the ratio of secondary-to-primary nuclei, for instance the boron (B)/carbon (C) ratio, which provides an estimate of the amount of matter traversed by CRs ...
M. D’Angelo, P. Blasi, E. Amato
semanticscholar   +1 more source

Impairments on the Construction of a Cosmic Neutrino Detector in a Romanian Salt Mine

Natural Sciences, EarlyView.
The modulus of the transfer function of an antenna when boreholed in salt. With red are represented results from the Targu Ocna salt mine and with black‐from Slanic salt mine ABSTRACT Indirect cosmic neutrino detectors utilize dense media to enhance the likelihood of neutrino interactions within the detection volume.
A. M. Badescu
wiley   +1 more source

Overview on direct and indirect measurements of cosmic rays - Some thoughts on galactic cosmic rays and the knee

, 2005
An overview is given on results from direct and indirect measurements of galactic cosmic rays. Their implications on the contemporary understanding of the origin of cosmic rays and the knee in their energy spectrum are discussed.Comment: Invited overview,
Hoerandel, Joerg R.
core   +2 more sources

Multi messenger astronomy and CTA: TeV cosmic rays and electrons

, 2012
Cosmic rays are a sample of solar, galactic and extragalactic matter. Their origin and properties are one of the most intriguing question in modern astrophysics. The most energetic events and active objects in the Universe: supernovae explosion, pulsars,
Abdo, Abdo, Ackermann, Ackermann, Adriani, Adriani, Adriani, Adriani, Aguilar, Aharonian, Aharonian, Aharonian, Aharonian, Ahlers, Ahn, Alcaraz, Alcaraz, Allen, Antoni, Antoni, Apel, Asakimori, Ave, Blasi, Boezio, Boezio, Boezio, Chang, Cirelli, Cronin, Delahaye, DuVernois, Earl, Engelmann, Erlykin, Fujita, Funk, Ginzburg, Giuliani, Gleeson, Grimani, Haino, Hareyama, Hörandel, Kamae, Kobayashi, Koyama, Maestro, Malyshev, Menn, Mirko Boezio, Müller, Nishimura, Obermeier, Piergiorgio Picozza, Ptuskin, Shaviv, Shong, Strong, Swordy, Tavani, Torii, Yoon, Zatsepin   +63 more
core   +1 more source

GZK Violation - a Tempest in a (Magnetic) Teapot? [PDF]

, 2000
The apparent lack of suitable astrophysical sources for the observed highest energy cosmic rays (UHECRs) within $\approx 20$ Mpc is the "GZK Paradox". We constrain representative models of the extra-galactic magnetic field structure by Faraday Rotation ...
Farrar, Glennys R., Piran, Tsvi
core   +2 more sources

Radiation‐Induced Degradation in Polymeric Materials: Alterations in Physical–Chemical Properties and Their Effects on Electrical Performance of Insulation Systems

High Voltage, EarlyView.
ABSTRACT This paper investigates the effects of radiation on polymeric materials used as insulation systems in electrical equipment such as cables for nuclear and particle accelerator applications. After a detailed description of the physics of radiation‐induced damage in the polymeric matrix, a comprehensive analysis of the physical–chemical and ...
Simone Vincenzo Suraci, Davide Fabiani
wiley   +1 more source

Neutrino yield from Galactic cosmic rays [PDF]

, 2014
We calculate the neutrino yield from collisions of cosmic ray (CR) nuclei on gas using the event generator QGSJET-II. We present first the general characteristics and numerical results for the neutrino yield assuming power-law fluxes for the primary CR ...
M. Kachelriess, S. Ostapchenko
semanticscholar   +1 more source

Galactic PeV Neutrinos

, 2013
IceCube experiment has detected two neutrinos with energies beween 1-10 PeV. They might have originated from Galactic or extragalactic sources of cosmic rays.
Gupta, Nayantara
core   +1 more source

Cosmic ray exposure and gas retention ages of the shocked angrite Northwest Africa 7203: Implications for a collisional history of angrites' parent body

Meteoritics &Planetary Science, EarlyView.
Abstract Angrites and eucrites are among the oldest basaltic rocks in the solar system. However, the shock histories of these meteorite groups differ markedly, as most angrites show little to no evidence of shock metamorphism. While some angrites exhibit weak wavy extinction in olivine, indicative of low‐level shock, only two—Northwest Africa (NWA ...
Atsushi Takenouchi, Hirochika Sumino, Hideyuki Hayashi, Takashi Mikouchi, Martin Bizzarro   +4 more
wiley   +1 more source

Cosmic rays: extragalactic and Galactic [PDF]

, 2014
From the analysis of the flux of high energy particles, $E>3\cdot 10^{18}eV$, it is shown that the distribution of the power density of extragalactic rays over energy is of the power law, ${\bar q}(E)\propto E^{-2.7}$, with the same index of $2.7$ that ...
Istomin, Ya. N.
core